초록 ▼

A power supply unit inclding a battery 4 that stores electric power used for operations of various devices; a dynamo 19, a rotation support mechanism 14, and a rectifying section 32 as charging means that converts natural energy into electric energy and supplies electric power of the electric energ

A power supply unit inclding a battery 4 that stores electric power used for operations of various devices; a dynamo 19, a rotation support mechanism 14, and a rectifying section 32 as charging means that converts natural energy into electric energy and supplies electric power of the electric energy to the battery 4 to be charged; a charging control section 36 for changing over between supply and stop of the electric power from the charging means to the storage means; and a charging control driving unit 45 and a low-voltage charging function of an arithmetic processing part 51 as charging changeover control means that controls the charging control section 36 such that supply and stop of the electric power are repeated when the charging voltage for charging the battery 4 with electric power is not less than a predetermined value, and continues supply of the electric power when the charging voltage is less than the predetermined value.

대표청구항 ▼

The invention claimed is: 1. A power supply unit comprising: a storage means for storing electric power that is used for operations of various devices; a charging means for transforming natural energy into an electrical energy, and charging by supplying an electric power as the electric energy to s

The invention claimed is: 1. A power supply unit comprising: a storage means for storing electric power that is used for operations of various devices; a charging means for transforming natural energy into an electrical energy, and charging by supplying an electric power as the electric energy to said storage means; a charging changeover means for changing over between supply and stop of the electric power from said charging means to said storage means; and a charging changeover control means for controlling said charging changeover means such that supply and stop of said electric power are repeated when a charging voltage for charging said storage means with electric power is not less than a predetermined value, and continues supply of said electric power when said charging voltage is less than the predetermined value. 2. The power supply unit according to claim 1, wherein said charging changeover control means obtains said charging voltage on the basis of the magnitude of said natural energy. 3. A wind turbine generator comprising the power supply unit according to claim 1. 4. A power supply unit comprising: a storage means for storing electric power that is used for operations of various devices; a charging means for transforming natural energy into an electrical energy, and charging by supplying an electric power as the electric energy to said storage means; a charging changeover means for changing over between supply and stop of the electric power from said charging means to said storage means; and a charging changeover control means for controlling said charging changeover means such that supply and stop of said electric power is changed over at stop time intervals corresponding to a charging voltage for charging said storage means with electric power. 5. A power supply unit comprising: a storage means for storing electric power that is used for operations of various devices; a charging means for transforming natural energy into an electrical energy, and charging by supplying an electric power as the electric energy to said storage means; a charging changeover means for changing over between supply and stop of the electric power from said charging means to said storage means; and a charging changeover control means for controlling said charging changeover means such that supply and stop of said electric power are repeated at stop time intervals corresponding to a charging voltage for charging said storage means with electric power when said charging voltage is not less than a predetermined value, and continues supply of said electric power when said charging voltage is less than the predetermined value. 6. A generator comprising: an electric power generation means for generating electric power; a storage means for storing electric power generated by said electric power generation means; an output means for outputting electric power stored in said storage means to an external load or stopping the output; a voltage detection means for detecting a voltage of the electric power generated by said electric power generation means; and a control means for controlling said output means; said control means stops the output of electric power to said external load when the voltage detected by said voltage detection means is not more than a predetermined value. 7. The generator according to claim 6, further including a stored electric power detection means for detecting an amount of electric power stored in said storage means; and said control means stops the output of electric power to said external load when the voltage detected by said voltage detection means is not more than a predetermined value and the amount of electric power detected by said stored electric power detection means is not more than a predetermined value. 8. The generator according to claim 6, wherein said electric power generation means generates electric power by converting kinetic energy for a rotating shaft into electric power, and said voltage detection means detects the voltage on the basis of the number of revolutions of said rotating shaft. 9. The generator according to claim 6, wherein a rotating shaft of said electric power generation means is rotated by wind power. 10. The generator according to claim 6, further including an inverter for converting electric power stored in said storage means into electric power having a specific wavelength and outputting the electric power to said external load, and said output means is included in said inverter. 11. The generator according to claim 6, wherein said control means stops the output of the electric power to said external load after a predetermined time period elapses, when said control means stops the output. 12. The generator according to claim 6, further including a memory means for storing operation contents of said control means, and said control means determines on the basis of the operation contents stored in said memory means whether or not the output of the electric power to said external load should be stopped when the voltage detected by said voltage detection means is not more than the predetermined value. 13. The generator according to claim 12, further comprising operation means for rewriting memory contents of said memory means on the basis of an operation of a user. 14. The generator according to claim 6, further comprising display means for displaying at least one of the number of revolutions of said shaft of said electric power generation means, electric power generated by said electric power generation means, the amount of electric power stored in said storage means, current of the electric power stored in said storage means, current of electric power consumed by said external load, and storage contents stored in said memory means. 15. A power supply unit comprising: a storage means for storing electric power that is used for operations of various devices; a charging means for transforming natural energy into an electrical energy, and charging said storage means with the electric energy; an auxiliary charging means for charging said storage means with auxiliary electric power; and a charging control means for monitoring a charging voltage of said storage means and permitting that said auxiliary charging means charge auxiliary electric power to said storage means when said charging voltage is less than a predetermined value. 16. The power supply unit according to claim 15, wherein said auxiliary charging means comprises: an auxiliary power supply means for outputting auxiliary electric power as direct current of a predetermined voltage; and a changeover means for changing over between supply and stop of said auxiliary electric power to said storage means by said charging control means. 17. A wind turbine generator comprising the power supply unit according to claim 15. 18. A power supply unit comprising: a storage means for storing electric power that is used for operations of various devices; a charging means for transforming natural energy into an electrical energy, and charging said storage means with the electric energy; an auxiliary charging means for charging said storage means with auxiliary electric power such that said storage means has a charging voltage of not less than a predetermined value. 19. A wind turbine generator comprising the power supply unit according to claim 18. 20. A power supply unit comprising: a driving force generation means for generating driving force by converting natural energy into kinetic energy; a measurement means for measuring the magnitude of said driving force; an electric power generation means for generating electric power by being operated with the driving force of said driving force generation means; a changeover means for changing over between transmission and interruption of the driving force of said driving force generation means to said electric power generation means; and a changeover control means for controlling said changeover means such that the driving force from said driving force generation means to said electric power generation means is interrupted when the magnitude of said driving force measured by said measurement means is less than a predetermined value, and the driving force is transmitted from said driving force generation means to said electric power generation means when the magnitude of said driving force is not less than the predetermined value. 21. The power supply unit according to claim 20, wherein said changeover control means comprises a transmission inhibition means for inhibiting the transmission of the driving force from said driving force generation means to said electric power generation means till the magnitude of said driving force has increased to not less than a transmission start value obtained by adding a certain value to said predetermined value when the magnitude of said driving force increases from less than said predetermined value to not less than said predetermined value. 22. The power supply unit according to claim 20, wherein said driving force generation means comprises: a rotation body which rotates by said natural energy; and a rotating shaft which rotates together with said rotation body. 23. The power supply unit according to claim 20, wherein said measurement means measures the rotational speed of said rotation body. 24. The power supply unit according to claim 20, wherein said natural energy is wind power. 25. A generator comprising the power supply unit according to claim 20. 26. A power supply unit comprising: a driving force generation means for generating driving force by converting natural energy into kinetic energy; an electric power generation means for generating electric power by being operated with said driving force; a energisation operation type clutch means for changing over with clutch force corresponding to operation current between transmission and interruption of the driving force from said driving force generation means to said electric power generation means; and a clutch control means for outputting said operation current to said clutch means with controlling said operation current such that said clutch force is increased in accordance with said driving force. 27. The power supply unit according to claim 26, wherein said clutch control means outputs an operation current to generate a large clutch force for operation start when said clutch means is changed over from an interruption state to a transmission state. 28. The power supply unit according to claim 26, wherein said clutch control means controls said operation current such that said clutch force is increased stepwise. 29. The power supply unit according to claim 26, wherein said driving force generation means comprises: a rotation body which rotates by said natural energy; and a rotating shaft which rotates together with said rotation body. 30. The power supply unit according to claim 29, wherein said natural energy is wind power. 31. A generator comprising the power supply unit according to claim 26.